Home / 143,127.40-214,690.91-54,359.68

Finding the Fourth Proportional to 143,127.40, 214,690.91 and 54,359.68

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Solution

The fourth proportional to 143,127.40, 214,690.91 and 54,359.68 is: 81,539.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,127.40 : 214,690.91 = 54,359.68 : x
  2. Step 2: Convert to fraction form
    143,127.40/214,690.91 = 54,359.68/x
  3. Step 3: Cross multiply
    143,127.40x = 214,690.91 × 54,359.68
  4. Step 4: Simplify right side
    143,127.40x = 11,670,528,228.95
  5. Step 5: Solve for x
    x = 11,670,528,228.95/143,127.40
  6. Step 6: Final answer
    x = 81,539.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.